Buffing and cleaning of metal parts



Patented June I 21, 1927.-

UNITED STATES SUMNER REDWAY MASON,

TRIO COMPANY, INCORPORATED, YORK.

PATENT OFFICE.

CORPORATION OF NEW BUFFING ANI) CLEANING OF METAL PARTS.

No Drawing.

This invention relates to the bufiing and cleaning of metal parts, and more particularly to an improved bufiing compound for use in these operations.

v Thcobject of the invention is to provide a bufling compound which will insure a thorough cleansing of the buifed parts by a complete removal of all bufling compound when the parts are dipped into a bath of cleaning solution.

In the practice of. bufiing and cleaning metal parts as generally followed the parts are first buffed by the use of a buffingcompound which consists of a mixture of tripoli,

- stearic acid, paraifin, tallow, and similar materials. After being buffed with this compound the metal parts are dipped into a hot alkaline solution for the purpose of removing the bufiing compound therefrom. Difficulty is encountered in this operation, however, due to the fact that the relatively inert tripoli is not readily acted upon by the cleaning solutions, and bufiing compound which has accumulated in crevices and de ressions of the metal parts is not remov by the cleansing solution, and an extra operation of scrubbing is required on such parts in order that they may be entirely freed from the buffing compound.

In accordance with the general features of this invention, a" material is added to a plastic base bufling compound which when it is dipped into the alkaline solution will freely react therewith to cause a copious production of gas which will buffing compound remaining on the parts after the bufiing operation and will set up a scrubbing operation. which will-entirely remove the buffing material remaining on the parts when they are dipped into the cleaning solution. v

It has been found that the addition of a very small percentage of finely divided material such as aluminum or zinc'added to the buffing compound will cause this compound to be rapidly reacted on by the hot alkaline cleanin solutions which results in a copious and e ervescence of hydro en gas. This hydrogen gas as it is given 0 disintegrates the buffing compound and results in the production of a clean surface free from all bufiing compounds. One per cent weight of finely divided aluminum added Application filed March 28, 1921.

disintegrate the Serial No. 456,479.

a buffing compound consisting of a mixture of tripoli, stearic acid, parafiin, tallow, and similar materials has been found to be sufficient to cause a reaction which will thoroughly disintegrate and remove the bufling compound from the metal parts.

a What is claimed is:

1. A bufiing compound comprising an abrasive, a suitable binder of fat and wax,

and a small ercentage of a metal capable of free reactlon with an alkaline solution to cause a generation'of hydrogen gas to remove the compound from a buffed surface.

2. A bufling compound comprising an abrasive, a suitable binder of fat and wax, and about one per cent by weight of finely divided aluminum.

3. A bufling compound for metal parts comprising tripoli, a binder of fat and wax, and a small percentage of a metal capable of free reaction with an alkaline solution to cause a generation of hydrogen gas.

4. A bufling compound comprising an abrasive, stearic acid, a wax, and a small percentage of a metal capable ofreaction with an alkaline solution to cause a free generation of hydrogen 5. A bufling compound comprising tripoli, stearic acid, paraflin, and a small percentage of aluminum.

6. A bufiing compound comprising an abrasive, a suitable binder, and a small percentage of aluminum.

7 A buffing compound containing a binder of fat and Wax, and an ingredient which will act to remove compound remaining on the surface after bufling.

8.- A bufiing compound having a plastic base and containing a chemically active ingredient to. react with another substance to remove the compound remaining on the surface after bufiing.

9. A buffing compound havin a plastic base, an abrasive and finely divlded active metal to react with a solution to remove the compound which remains on the surface after bufling.

10. A bufiin compound for preparing a surface for -p ating, comprising a base of stearic acid, an abrasive, and aluminum which will react freely with an alkaline solution to cause an efi'ervescence for dislodging binder of fat and y and removing the compound which remaihs violent efl'ervescence within the film to comon the surface after buifing. pletely dislodge and remove said fi1m.' 11. A bufling compound of a character to In witness whereof, I hereunto subscribe 10 leave'afilm on a surface after bufiin ,commy name this 21st day of March A. D.,

5 prising a binder of fat and wax, an a rasive 1921. a v I and finely divided active metal capable of reactingwith an alkaline solution to cause a SUMNER REDWAY MASON; 

